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Patent Agency Ranking
公开(公告)号：US20250027425A1
公开(公告)日：2025-01-23
申请号：US18235417
申请日：2023-08-18
Applicant: RTX Corporation
Inventor： Graham R. Philbrick , Gary Collopy , John P. Virtue, Jr.
Abstract: An operating method is provided during which a command is received to increase thrust generated by a propulsor rotor from a first thrust level to a second thrust level. The propulsor rotor is operatively coupled to an engine core and an electric machine. The engine core includes a flowpath, a compressor section, a combustor section and a turbine section. The engine core is operated in a transient state to increase power output from the engine core to the propulsor rotor from a first power level to a second power level in response to the command. The electric machine is operated to boost the power output from the engine core to the propulsor rotor while the engine core is operating in the transient state. A clearance control system for the engine core is operated based on the operation of the electric machine.
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公开(公告)号：US12209501B1
公开(公告)日：2025-01-28
申请号：US18235394
申请日：2023-08-18
Applicant: RTX Corporation
Inventor： Graham R. Philbrick , Gary Collopy , John P. Virtue, Jr.
Abstract: An operating method is provided during which a command is received to decrease thrust generated by a propulsor rotor from a first thrust level to a second thrust level. The propulsor rotor is operatively coupled to an engine core and an electric machine. The engine core includes a flowpath, a compressor section, a combustor section and a turbine section. The engine core is operated in a transient state to decrease total power of the engine core from a first power level to a second power level in response to the command. The electric machine is operated as a generator to reduce power output from the engine core to the propulsor rotor while the engine core is operating in the transient state. A clearance control system for the engine core is operated based on the operation of the electric machine.
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公开(公告)号：US20250027424A1
公开(公告)日：2025-01-23
申请号：US18235394
申请日：2023-08-18
Applicant: RTX Corporation
Inventor： Graham R. Philbrick , Gary Collopy , John P. Virtue, Jr.
Abstract: An operating method is provided during which a command is received to decrease thrust generated by a propulsor rotor from a first thrust level to a second thrust level. The propulsor rotor is operatively coupled to an engine core and an electric machine. The engine core includes a flowpath, a compressor section, a combustor section and a turbine section. The engine core is operated in a transient state to decrease total power of the engine core from a first power level to a second power level in response to the command. The electric machine is operated as a generator to reduce power output from the engine core to the propulsor rotor while the engine core is operating in the transient state. A clearance control system for the engine core is operated based on the operation of the electric machine.
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公开(公告)号：US12060839B1
公开(公告)日：2024-08-13
申请号：US18299431
申请日：2023-04-12
Applicant: RTX Corporation
Inventor： Marc J. Muldoon , Bradley C. Schafer , John P. Virtue, Jr. , Brian V. Winebrenner , Jason B. Solomonides
Abstract: A bowed rotor prevention system includes a gas turbine engine, an electric motor, and a core turning controller in signal communication with the electric motor. The gas turbine engine includes a rotor that is rotatably coupled to a drive shaft. The electric motor rotatably is coupled to a motor shaft, which is mechanically coupled to the drive shaft so as to rotate therewith. The core turning controller is configured to invoke an anti-rotor bowing mode, and to control the electric motor to periodically rotate the rotor into a plurality of rotor positions during a given time period in response to invoking the anti-rotor bowing mode.
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公开(公告)号：US12018578B1
公开(公告)日：2024-06-25
申请号：US18299423
申请日：2023-04-12
Applicant: RTX Corporation
Inventor： Bradley C. Schafer , Brian V. Winebrenner , Jason B. Solomonides , Marc J. Muldoon , John P. Virtue, Jr.
CPC classification number: F01D25/36 , F01D21/04 , F05D2270/114
Abstract: A bowed rotor prevention system includes a gas turbine engine, and electric motor, and a core turning controller. The gas turbine engine includes a rotor that is rotatably coupled to a drive shaft. The electric motor is rotatably coupled to a motor shaft, which is mechanically coupled to the drive shaft so as to rotate therewith. The core turning controller in signal communication with the electric motor. The core turning controller determines whether a rotor bow is present in the rotor based on an operating time of the gas turbine engine, determines a motoring time based on the operating time, and invokes an anti-rotor bowing mode configured to control the electric motor to rotate the rotor according to the motor time.
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